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Curious Crash on latest 1.12.2 forge server


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I have a very curious crash on my hands. My watchdog is seeing ticks run past 60 seconds (the typical default). I have for now disabled Watchdog as I see minimal latency and hardly any entity lag. I know it's not a great idea to host a server on the same machine that I'm playing on, but I've thoroughly tested that with my configuration and have had good results. This server still has issues even when my personal game is not running. It often skips 20-50 ticks every few minutes. No more than 4 players really at a time. but it catches me at this point

Description: Watching Server


java.lang.Error: ServerHangWatchdog detected that a single server tick took 60.00 seconds (should be max 0.05)

at net.minecraft.entity.Entity.move(Entity.java:757)

at net.minecraft.entity.item.EntityItem.onUpdate(EntityItem.java:122)

at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:1996)

at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:832)

at net.minecraft.world.World.updateEntity(World.java:1958)

at net.minecraft.world.World.redirect$zzp000$updateEntity(World.java:5123)

at net.minecraft.world.World.updateEntities(World.java:1762)

at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:613)

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:767)

at net.minecraft.server.dedicated.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:397)

at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:668)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)

at java.lang.Thread.run(Unknown Source)


The actual crash log: https://pastebin.com/rSLDB6um



The server after disabling the ticktime watchdog does near perfect. Every once in a while I see a "waiting for server" ingame message on a WAILA like mod but I see hardly no other type of latency. I've tried running this same server with mohist (not much experience outside of forge and mohist) and it does not launch. The Modlist can be found here: https://pastebin.com/CTyrS2nZ. I should mention I have a 12-core running ~4.5-4.7 GHz and 32 GB dedicated to the server alone.

I've also included the last half hour of the latest.log for convenience: https://pastebin.com/1Q2weu7j

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